Grey tinamou

The gray tinamou is believed to be the largest species among the tinamous. Reported total length

is from 41.5 to 49 cm (16.3 to 19.3 in) and possibly as much as 53 cm (21 in). In body mass, males may scale from 1,325 to 1,863 g (2.921 to 4.107 lb), averaging 1,565 g (3.450 lb), and females can weigh from 1,430 to 2,080 g (3.15 to 4.59 lb), averaging 1,636 g (3.607 lb) and possibly weighing as much as 2,300 g (5.1 lb). As suggested by its name, it is mostly grey. The back and head are barred blackish, and its vent is cinnamon. White spotting extends along the head and down the neck.